Fender Tune - Free guitar and bass tune iOS app
MyBrocard - Brocard allows you to create an unlimited number of virtual cards for paying for advertising and other online payments, manage a team of buyers, choose from 20+ bins for various tasks, and enjoy convenient API for integrations.
Roadie Tuner - Fine tune your guitar in seconds
PST.NET - Virtual payment cards for online shopping and advertising
Epoch - Simple, with easy all-inclusive merchant integration. Powerful, with automated international customization. Flexible, for the most unique and sophisticated demands.
Coinramp - The Coinramp Card lets you spend over 10+ cryptocurrencies like cash, online, in-stores and ATM withdrawals. Available in 100+ countries, no ID needed. Anonymous Crypto Cards